Okay I'm having some difficulty with my FTB Unleashed server. My friend and I are trying to join a server together. I've ran a FTB server for two before and it ran perfectly but for some reason whenever my friend joins the server, he is frozen and lags so badly he can't move. However, when I'm on the server it doesn't effect me at all. I can walk and break blocks perfectly fine with no lag. Other people don't have the issue it's just my one friend. I'm running the server with 5 gigs of ram and have decent wifi. My friend has a mac and has to do the terminal trick to launch the launcher. Does anyone have the same issue or have a way to fix it? Some people said disable Voxelmap and we've already tried it. Please help!